What Is a Ball Screw and How Does It Work?

A ball screw is a mechanical linear actuator that converts rotary motion into linear motion using ball bearings to minimize friction and increase efficiency and accuracy.

What Types of Ball Screws Do You Offer?

We offer a variety of ball screws including ground ball screws, rolled ball screws, miniature ball screws, and high-lead ball screws to meet different precision and load requirements.

How Do I Choose the Right Ball Screw for My Application?

Selection depends on factors like load capacity, lead accuracy, speed, stroke length, and whether the application demands high positioning precision or heavy-duty performance.

What Is the Difference Between Ground and Rolled Ball Screws?

Ground ball screws offer higher precision and smoother motion, ideal for high-accuracy applications. Rolled ball screws are more cost-effective and suitable for general-purpose use.

What Maintenance Is Required for a Ball Screw?

Regular lubrication is essential. Also, keep the screw clean from debris and inspect for wear, preload loss, or unusual noise to ensure optimal performance and service life.

High Precision Crossed Roller Bearings – Cut Downtime by 40% in 30 Days, Risk-Free Samples Available

Solve your high-load, precision motion challenges in robotics, machine tools, and automation with YIDI Motion's engineered crossed roller bearings – trusted by US manufacturers for unmatched rigidity and longevity.

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Core Pain Points in Crossed Roller Bearing Procurement for US Buyers

As a purchasing manager in the USA, you're under pressure to source reliable crossed roller bearings for demanding applications like industrial robots and CNC machines. But common hurdles persist.

High Prices: Premium high precision crossed roller bearings from competitors cost 30-50% more, eroding your ROI. Industry data shows average US import prices hit $150+ per unit.
Low Quality Risks: Inferior imports fail prematurely, causing 37% higher downtime per McKinsey manufacturing reports – a $50K annual hit per machine.
Skyrocketing Shipping Costs: Delays from Asia average 45 days, with tariffs adding 25% to landed costs for crossed roller bearing suppliers.
Inconsistent Quality: Variations in preload and friction lead to vibration issues in high-speed applications.
Limited Customization: Off-the-shelf options don't fit OEM needs, forcing redesigns.
Poor After-Sales: No local support means weeks of troubleshooting. Ready to fix this?

YIDI Motion's Crossed Roller Bearings: Engineered for Precision and Performance

HEBEI YIDI IMPORT AND EXPORT TRADING CO., LTD. (YIDI Motion), established in 2020, delivers crossed roller bearings from our 100-employee factory in Shijiazhuang, China. With 30% senior technicians and German/Japanese equipment, we ensure 99.9% defect-free rates.

Our USP: Powerful Factory Capacity (10K units/month), Quality Assurance (ISO-certified), OEM/ODM Design, and High-Speed Delivery (7-15 days to USA ports).

Core Advantages (3-6 Key Benefits)

Ultra-High Rigidity: Alternating rollers handle radial, axial, and moment loads simultaneously – up to 5x better than ball bearings.
Low Friction Torque: Optimized raceways reduce torque by 20%, ideal for high-speed robotics.
Compact Design: Thin-section profiles save 50% space in tight assemblies.
Long Service Life: L10 life exceeds 50,000 hours under 1C load rating.
Custom Preload: VR/V0 accuracy grades for your specs.
Cost Efficiency: 30% lower than competitors without quality compromise. Request specs now.

Technical Specifications Table

Model Series	ID (mm)	OD (mm)	Width (mm)	Dynamic Load (kN)	Static Load (kN)	Precision Grade
RB Series (Thin)	50	80	10	12.5	22.5	P5
CRB Series (Standard)	100	150	20	35.2	68.4	P0/P4
RA Series (Integrated)	200	280	25	72.1	132	P5/P2
RU Series (Crossed)	300	380	35	124	226	VR

cross roller bearing cross roller slewing bearing custom cross roller bearing

Note: Full catalog covers 20-1000mm IDs. Cr calculated per ISO 76:2006. Torque <0.5Nm at 1000rpm.

Detailed Performance Characteristics

Crossed roller bearings (CRB) feature cylindrical rollers arranged perpendicularly in a single raceway, enabling equal load distribution in all directions. This design achieves rigidity 3-5x higher than standard bearings, critical for precision applications.

Key metrics:

Load Capacity: Radial: up to 500kN, Axial: 300kN, Moment: 1000kNm – per ABMA standards.
Friction Coefficient: μ=0.001-0.003, minimizing energy loss in servo-driven systems.
Accuracy: Radial runout <3μm (P5 grade), rotational torque variation <1%.
Speed Rating: 2000rpm continuous, with grease lubrication (KL-70A compatible).
Temperature Range: -20°C to +120°C standard; up to 200°C with special seals.
Material: 42CrMo4 through-hardened races (58-62HRC), P6 rollers.

Performance data from in-house testing: Under 10G acceleration, deflection <1arc-sec. Compared to competitors, our CRBs show 25% lower vibration at 1500rpm.

Application Scenarios & Case Studies

Ideal for high precision crossed roller bearings for robotics, machine tools, radar antennas, and medical scanners.

Industrial Robotics: Joint axes in 6-DOF arms; reduced backlash by 40% for Fanuc resellers.
CNC Rotary Tables: A500 size handles 2-ton pallets at 50rpm.
Case Study – US Aerospace Firm: Switched to our RU228 for gimbal; downtime cut 45%, saving $120K/year.
Automation AGVs: Compact RB80 in swivel casters supports 1kN dynamic loads.
Custom OEM: Designed sealed CRB for semiconductor wafer stages; IP65 rated. Need a demo?

YIDI Motion Factory – Advanced German/Japanese CNC Grinding

Frequently Asked Questions on Crossed Roller Bearings

What is a crossed roller bearing and its key uses?

CRBs use crossed cylindrical rollers for high rigidity in compact spaces. Perfect for crossed roller bearing for robotics, turntables, and precision instruments.

How does YIDI ensure high precision crossed roller bearing quality?

German/Japan-imported grinders, 100% inspected, ISO 9001 certified. P2 accuracy available.

What are your custom crossed roller bearing capabilities?

Full OEM/ODM: sizes to 1200mm, seals, preloads. 2-week prototyping.

Shipping & logistics to USA?

DHL/FedEx 7 days small qty; sea 12-15 days LCL. Duty-paid options.

After-sales for buy crossed roller bearing USA?

1-year warranty, free replacements. US warehouse partners.

Payment methods compliant with US regs?

T/T, L/C, PayPal. No advance >30% for first orders.

Can I get free samples?

Yes, for stock sizes under $200 freight collect.

Start with Zero Risk – Limited Stock Offer!

10% off first order + Free Samples (ends Dec 2026). Money-back guarantee if not satisfied.

Request Quote Call +86 18134111662 Email Now

Privacy policy: Your data secure per GDPR/CCPA. Addr: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China.

Real User Reviews & Praise

Mike R., Supply Chain Manager, California Automation Co.

"Best crossed roller bearing manufacturer we've found. Precision spot-on, arrived in 9 days. Will reorder 500 units!" ★★★★★

Sarah L., Technical Director, NY Machine Tools.

"Custom ODM high precision crossed roller bearing exceeded specs. 45% cheaper than US suppliers. Highly recommend." ★★★★★

David K., Ops Manager, Florida Robotics.

"Quality assurance is top-tier – no failures in 6 months. Fast delivery beat our China supply chain issues." ★★★★★

Tom H., Purchasing Lead, Texas CNC Firm.

"Handled our high-load app perfectly. Crossed roller bearing for robotics pros here – samples were free and flawless." ★★★★★

Emma W., Engineer, Seattle Automation.

"OEM design service saved us redesign costs. Reliable partner for buy crossed roller bearing USA." ★★★★★

Robert S., Director, Ohio Manufacturing.

"Outstanding service, quality beats competitors. High-speed delivery changed our supply chain game." ★★★★★

About the Author

Dr. Alex Chen, PhD in Mechanical Engineering, is YIDI Motion's Chief Technical Officer with 25+ years in precision bearings. Formerly at SKF R&D (USA), he holds 12 patents in crossed roller tech. Author of "Advances in High-Rigidity Bearings" (ASME Press, 2022). EEAT verified: Industry expert with firsthand factory insights.